package libraServer;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

import javax.sql.DataSource;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;

@Configuration
public class DriudConfiguration {
	/**
因为
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20
spring.datasource.maxWait=60000
spring.datasource.timeBetweenEvictionRunsMillis=60000
spring.datasource.minEvictableIdleTimeMillis=300000
spring.datasource.poolPreparedStatements=true
这些属性配置都是druid数据源独有的配置，所以如果希望配置生效，我们需要自己手动创建数据源
通过@ConfigurationProperties(prefix = "spring.datasource")绑定配置文件中的属性值
	 * @return
	 */
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druid(){
       return new DruidDataSource();
    }
    
    
    //配置Druid的监控
    //1、配置一个管理后台的Servlet
//    @Bean
//    public ServletRegistrationBean<StatViewServlet> statViewServlet(){
//        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<StatViewServlet>(new StatViewServlet(), "/druid/*");
//        Map<String,String> initParams = new HashMap<>();
//        initParams.put("loginUsername","admin");
//        initParams.put("loginPassword","123456");
//        initParams.put("allow","");//默认就是允许所有访问
//        initParams.put("deny","192.168.15.21");
//        bean.setInitParameters(initParams);
//        return bean;
//    }
//    //2、配置一个web监控的filter
//    @Bean
//    public FilterRegistrationBean<WebStatFilter> webStatFilter(){
//        FilterRegistrationBean<WebStatFilter> bean = new FilterRegistrationBean<WebStatFilter>();
//        bean.setFilter(new WebStatFilter());
//        Map<String,String> initParams = new HashMap<>();
//        initParams.put("exclusions","*.js,*.css,/druid/*");
//        bean.setInitParameters(initParams);
//        bean.setUrlPatterns(Arrays.asList("/druid/*"));
//        return  bean;
//    }
}
